| When the condition advances so far that the external abdominal ostium of the tube is closed, a pyosalpinx forms. |
| The most frequent form of tubal gonorrhea is pyosalpinx, or pus tube. |
| Endometriomas can be mistaken on sonography for pyosalpinx or cystic teratomas. |
| A hydrosalpinx is like a pyosalpinx, with both tubal ends sealed, except that its content is a serous or watery fluid. |
